(e.g., a specific streaming site, a physical DVD/Blu-ray, or a social media post).
Even small fragments of the story can help identify the work. a specific streaming site
Knowing if it is a romance, thriller, variety show, or documentary would narrow the search significantly. a physical DVD/Blu-ray
A specific internal identifier for a media company (such as NHK, Fuji TV, or Netflix Japan) that hasn't been marketed under that alphanumeric name. a specific streaming site
you have so I can help you find the specific Japanese entertainment you're looking for.